fix(web): setup wizard no longer forces printers to bind to a barrier

"Cilën barrierë shërben kjo pajisje?" is load-bearing for readers and
cameras (which barrier a scan opens + inherited direction) but nothing
consumes it on a printer — print routing is role + failoverRank
(printer-routing.ts). The wizard applied the requirement to every
non-controller device, so adding a printer demanded a meaningless relay
pick that got stored as dead config.

Printers are now exempt: no requirement, the binding panel is hidden,
the binding is not persisted (a stale pre-fix one drops off on next
edit), and the device list shows the printer's ROLE instead of a bogus
amber "unbound". Server never validated it — no API change.

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V

apps/web/src/SetupWizard.tsx

@@ -463,6 +463,16 @@ function DeviceSummary({ assignment, controllers }: { assignment: Assignment; co
       </span>
     );
   }
+  // Printers don't bind to a barrier (routing is role + failoverRank) — show the
+  // role instead of a bogus "unbound" warning.
+  if (assignment.category === "printer") {
+    const role = typeof cfg.role === "string" ? cfg.role : null;
+    return role ? (
+      <span className="text-term-muted">
+        {t(role === "booth-receipt" ? "devices.role.booth" : "devices.role.lane")}
+      </span>
+    ) : null;
+  }
   // Bound device: show controller + relay it points at, with inherited direction.
   const controllerId = typeof cfg.controllerId === "string" ? cfg.controllerId : null;
   const relay = typeof cfg.relay === "number" ? cfg.relay : null;
@@ -686,7 +696,11 @@ function DeviceForm({
           ...(i.role === "presence" && i.activeLow ? { activeLow: true } : {}),
           ...(i.role === "button" && i.cooldownSec ? { cooldownSec: i.cooldownSec } : {}),
         }));
-    } else if (controllerId && boundRelay !== "") {
+    } else if (!isPrinter && controllerId && boundRelay !== "") {
+      // Readers/cameras bind to a controller relay (which barrier a scan opens +
+      // inherited direction). Printers do NOT — routing is role+failoverRank only,
+      // so no binding is emitted (and a stale one saved before 2026-07-06 drops
+      // off on the next edit).
       out.controllerId = controllerId;
       out.relay = boundRelay;
     }
@@ -759,7 +773,9 @@ function DeviceForm({
     if (!selected) return;
     // Bound devices must point at a controller relay (binding is optional in the
     // model with a fallback, but the wizard guides the admin to bind explicitly).
-    if (!isController && (!controllerId || boundRelay === "")) {
+    // Printers are exempt: nothing consumes a printer's binding — their routing is
+    // role + failoverRank (see printer-routing.ts).
+    if (!isController && !isPrinter && (!controllerId || boundRelay === "")) {
       setSaveError("Pick the controller and relay this device sits at.");
       return;
     }
@@ -959,8 +975,9 @@ function DeviceForm({
             />
           )}
 
-          {/* BOUND device: which controller + relay it sits at. */}
-          {!isController && (
+          {/* BOUND device: which controller + relay it sits at. Not printers —
+              nothing consumes a printer binding (role+rank routes print jobs). */}
+          {!isController && !isPrinter && (
             <BindingPicker
               controllers={controllers}
               controllerId={controllerId}